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Product Detailed Parameters
- Description：IC XPNDR 400KHZ I2C 16TQFN
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Number of I/O：4
- Interface：I2C
- Interrupt Output：Yes
- Features：POR
- Output Type：Open Drain, Push-Pull
- Current - Output Source/Sink：20mA
- Clock Frequency：400 kHz
- Voltage - Supply：1.71V ~ 5.5V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：16-WFQFN Exposed Pad
- Supplier Device Package：16-TQFN (3x3)
- Grade：-
- Qualification：-
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Overview
The MAX7323ATE+ is an I/O expander featuring eight ports: four push-pull outputs and four open-drain I/Os. It operates on a supply voltage of +1.71V to +5.5V with a maximum clock frequency of 400kHz via an I2C interface. The device provides 20mA sink current for both output types, with the open-drain ports offering overvoltage protection up to +6V. It includes latching transition detection and an interrupt output. Available in a 16-pin TQFN package, it functions within a temperature range of -40°C to +125°C.
Feature Summary
- Four push-pull outputs rated at 20mA sink current
- Four open-drain I/O ports rated to 20mA sink current
- Overvoltage protection up to +6V on I/O ports
- Latching transition detection with INT output
Applications
- Cell Phones
- Servers
- Notebooks
Procurement Notes
Verify the specific suffix 'ATE+' corresponds to the lead-free 16-pin TQFN-EP (3mm x 3mm) package variant. Confirm that the component meets the required automotive temperature specifications (-40°C to +125°C). Ensure the ordering information matches the exact pin configuration and exposed pad requirements for your PCB layout.
Selection Notes
Select this part when requiring a mix of push-pull outputs and overvoltage-tolerant open-drain I/Os. The 16 selectable slave addresses allow multiple devices on one bus. Verify that the 20mA drive capability meets load requirements and that the I2C interface speed supports system timing constraints.
Part Context
The MAX7323 belongs to the MAX7319–MAX7329 family of pin-compatible port expanders. It complements other variants like the MAX7320 (8 push-pull outputs) and MAX7321 (up to 8 open-drain I/Os). This specific model bridges the gap by providing four of each type in a single 16-pin package.
Replacement Considerations
The MAX7327 serves as a software-equivalent replacement, combining MAX7320 and MAX7323 functionality in a 16-port format. For direct pin-compatible substitution within the same package, verify if the MAX7323AEE+ (QSOP package) fits the mechanical constraints.
